Budget D100 360 Suggestions

A torque converter isn't on the list right now. Looking for a slightly better than stock cam that'll work with the stock converter.

do some research on this part of the swap
the 318 is internally balanced, while the 360 is externally balanced and this is done on the torque converter

now, to the best of my knowledge there are three ways to deal with this
(not counting the fourth option of building an internally balanced 360 because of your budget limitations)

1: buy a B&M conversion flex plate. this plate has a bite "missing" from it, which removes weight from the opposite side of the converter where the 360 has the weights welded on, making your neutral balance 318 converter balanced like a 360 unit

2: mopar performance offers a weight kit (or they used to). this comes with a template and some metal weight which you weld to the 318 converter, just like they did on the stock 360

3: just get a 360 converter. custom will make optimal use of the rest of your combination but stockers will do the trick aswell (specially if you can find a higher stall one)